package org.csmzxy.class2034;
import java.util.Scanner;

public class FirstJavaDemo {

    public static void main(String[] args){
        Scanner scanner = new Scanner(System.in);
        System.out.println("请输入您的名字：");
        String username = scanner.nextLine();
        System.out.println("您好：" + username + "!");
    }

}
